Fsdb::F...ression(3)

NAME ✨

dbcolsregression — compute linear regression between two columns. That’s the name, bestie, and it’s lowkey serving stats realness 💅

SYNOPSIS 🌸

dbcolsregression  [-a] column1 column2

DESCRIPTION 🦋

Okay so this one computes linear regression over column1 and column2. It outputs slope, intercept, and correlation coefficient. That’s the whole flex, no cap 💖

OPTIONS 🎀

• -a or --include-non-numeric — Compute stats over all records (treat non-numeric records as zero rather than just ignoring them).
• -f FORMAT or --format FORMAT — Specify a printf(3)-style format for output statistics. Defaults to "%.5g".

This module also supports the standard fsdb options:

• -d — Enable debugging output.
• -i or --input InputSource — Read from InputSource, typically a file name, or "-" for standard input, or (if in Perl) a IO::Handle, Fsdb::IO or Fsdb::BoundedQueue objects.
• -o or --output OutputDestination — Write to OutputDestination, typically a file name, or "-" for standard output, or (if in Perl) a IO::Handle, Fsdb::IO or Fsdb::BoundedQueue objects.
• --autorun or --noautorun — By default, programs process automatically, but Fsdb::Filter objects in Perl do not run until you invoke the run() method. The "--(no)autorun" option controls that behavior within Perl.
• --help — Show help.
• --man — Show full manual.

SAMPLE USAGE 🫶

Input:

#fsdb x     y
160 126
180 103
200 82
220 75
240 82
260 40
280 20

Command:

cat DATA/xy.fsdb | dbcolsregression x y | dblistize

Output:

#fsdb -R C slope:d intercept:d confcoeff:d n:q
slope:     -0.79286
intercept: 249.86
confcoeff: -0.95426
n:         7

#  | dbcolsregression x y
#                confidence intervals assume normal distribution and small n.
#  | dblistize

Sample data from <http://people.hofstra.edu/faculty/Stefan_Waner/RealWorld/calctopic1/regression.html> by Stefan Waner and Steven R. Costenoble. Iconic source material fr fr 🍓

SEE ALSO 👀

Peep dbcolstats, dbcolscorrelate, and Fsdb — the little fsdb family is right there, bestie 💜

CLASS FUNCTIONS 🧚

new

$filter = new Fsdb::Filter::dbcolsregression(@arguments);

Create a new dbcolsregression object, taking command-line arguments. Slay 🫶

set_defaults

$filter->set_defaults();

Internal: set up defaults.

parse_options

$filter->parse_options(@ARGV);

Internal: parse command-line arguments.

setup

$filter->setup();

Internal: setup, parse headers.

run

$filter->run();

Internal: run over each rows.

AUTHOR and COPYRIGHT 👑

Copyright (C) 1997-2022 by John Heidemann <johnh@isi.edu>

This program is distributed under terms of the GNU general public license, version 2. See the file COPYING with the distribution for details.

---

Catch you later, bestie 🫶 — this page came from perl v5.32.1, dated 2024-08-02, and it’s filed under Fsdb::F...ression(3). Periodt 💅✨